Here you have a really nice explanation about bacteria, virus and how cells in our body are affected by them.

What’s a vaccination… Check this video and you will understand better.

Why do you think we have to treat and kill some bacteria in the milk berore packing it. This is the uperisation processs. Uperization is a method of sterilizing milk by injecting steam under pressure to raise the temperature to 150 °C. The added water is evaporated off.

If you want to know a little bit more about uperisation, or different ways to kill bacteria on the milk follow this link. It’s in spanish.

Now technology can do lots of things, but even these machines can do a difficult operation just on remote control. This machines work on remote control, that means that the surgeon doesn’t need to be present in the operating theater for example.
A huge advance in our science and in our medicine.
Here you can see more videos about this incredible machine.

This is a tv program that explains very well what this machine can do. INCREDIBLE in one word!!